induced sputum


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sputum

 [spu´tum]
mucous secretion from the lungs, bronchi, and trachea that is ejected through the mouth, in contrast to saliva, which is the secretion of the salivary glands. Called also expectoration.
induced sputum a sputum specimen produced for diagnostic tests by aerosol administration of a hypertonic saline solution.
sputum specimen a sample of mucous secretion from the bronchi and lungs. The specimen may be examined microscopically for the presence of malignant cells (cytologic examination) or tested to identify pathogenic bacteria (bacteriologic examination). It is essential that the specimen obtained be mucus from the lungs and bronchi and not saliva. For those unable to produce sputum for examination, an aerosol may be used to increase the flow of secretions and stimulate coughing. The optimum time for collection of a sputum specimen is in the morning before eating or drinking anything. At this time secretions accumulated in the bronchi through the night are more readily available, and, should the coughing produce gagging, the patient is less likely to vomit if the stomach is empty. Specimens collected for bacteriologic culture must be placed in a sterile container and handled with care to avoid contamination from sources other than the sputum.

induced sputum

Infectious disease Sputum obtained by having the Pt inhale a saline–salt water mist, causing the Pt to cough deeply
References in periodicals archive ?
In the present study, 3% hypertonic saline induced sputum in 97.
specimen Candida species Oropharyneal, Atypical forms Mucosal oesophageal scrapings, and vulvo- brushings or vaginal biopsy mucosa Cryptococcus Meninges and All suspected Cerebrospinal species brain cases fluid Blood (or serum) Pneumocystis Pulmonary All suspected Induced sputum, jirovecii cases bronchoalveolar lavage, lung biopsy, etc.
Of the 26 patients studied, adequate induced sputum samples were obtained from 24 (92%).
Inflammatory subtypes in asthma: Assessment and identification using induced sputum.
Evidence of these changes has been found in both noninvasive samples, such as induced sputum, and in biopsies in the bronchial region.
6 The increased eosinophil in induced sputum was regarded as the only independent risk factor associated with PAFL in ten Brinke's study3 while in Lee's study he didn't find any correlation between the cell count of induced sputum and PAFL.
To isolate airway macrophages, induced sputum was processed according to a standard technique (Pizzichini et al.
7) Analysis of CLAT from induced sputum by Bottone and colleagues recorded 2/9 patients with proven cryptococcal pneumonia having a positive sputum CLAT.
The developed score did not include other clinical tools that have been employed for the diagnosis of SNPT such as fibrobroncoscopy [9-13], the use of induced sputum [14-20], concentration techniques [21-24], auramine-rhodamine enhanced AFB detection [25,26], or Adenosine deaminase activity in sputum or bronchoalveolar lavage [27-30] or fine needle aspiration [31,32].
Partial responder and nonresponder patients entered the next diagnostic phase: a methacholine bronchial provocation test (MPT) (7) and eosinophil count with induced sputum by hypertonic saline (3% NaCl).
If treatment of UACS and asthma do not improve the cough, one should rule out NAEB with an induced sputum test for eosinophils.